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postgres-cn / pgdoc-cn

PostgreSQL manual Chinese translation by China PostgreSQL Users Group
http://www.postgres.cn/docs
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PostgreSQL在online DDL原理方面材料很少，例如online DDL对读写性能的影响等 #323

Closed Andrewpqc closed 3 years ago

ChenHuajun commented 3 years ago

pg加字段，删字段，都只需要修改元数据。